Now that you have an idea of what cloaking is all about and how it is implemented, question arises as to whether you should use page cloaking. The one word answer is "NO". The reason is simple: search engines don't like it, and will probably ban your site from their index if they find out that your site uses cloaking. The reason that search engines don't like page cloaking is that it prevents them from being able to spider same page that their visitors are going to see. And if search engines are prevented from doing so, they cannot be confident of delivering relevant results to their users. In past, many people have created optimized pages for some highly popular keywords and then used page cloaking to take people to their real sites which had nothing to do with those keywords. If search engines allowed this to happen, they would suffer because their users would abandon them and go to another search engine which produced more relevant results.

Of course, a question arises as to how a search engine can detect whether or not a site uses page cloaking. There are three ways by which it can do so:

i) If site uses User-Agent cloaking, search engines can simply send a spider to a site which does not report name of search engine in User-Agent variable. If search engine sees that page delivered to this spider is different from page which is delivered to a spider which reports name of search engine in User-Agent variable, it knows that site has used page cloaking.

Probably best Search Engine Cloaker Software can be found if you Click Here!

ii) If site uses I.P. based cloaking, search engines can send a spider from a different I.P. address than any I.P. address which it has used previously. Since this is a new I.P. address, I.P. database that is used for cloaking will not contain this address. If search engine detects that page delivered to spider with new I.P. address is different from page that is delivered to a spider with a known I.P. address, it knows that site has used page cloaking.

iii) A human representative from a search engine may visit a site to see whether it uses cloaking. If she sees that page which is delivered to her is different from one being delivered to search engine spider, she knows that site uses cloaking.

Hence, when it comes to page cloaking, my advice is simple: don't even think about using it.

If, however, you are still determined to take that chance, and possibly reap big rewards as well, Click Here!

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Article by Sumantra Roy. Sumantra is one of most respected and recognized search engine positioning specialists on Internet. For more articles on search engine placement, subscribe to his 1st Search Ranking Newsletter by sending a blank email to: 1stSearchRanking.999.99@optinpro.com or by going to http://www.1stSearchRanking.net

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DVD-RAM is slightly different as it is a sector based disc which mounts on desktop of a PC when inserted into a drive. Files can then be copied to it in same way as any other mounted media. Some single-sided DVD-RAM discs can be removed from their caddy and inserted in a DVD-ROM drive which will then be able to read content of disc.

There are DVD video recorders which use DVD-RAM format. This enables themn to pull off clever tricks like timeshifting – where you can watch beginning of a programme you have recorded while you are still recording end on same disc.

DVD+RW is newest format and not supported by DVD Forum, body which sets standards for DVD. However, it is supported by some of biggest electronics and computer manufacturers, and is therefore likely to stick around.

It is also format used by Philips in its DVD video recorders. Despite not being authorised by DVD Forum, DVD+RW is claimed by its supporterd to be compatible with more DVD video players than DVD-R and DVD+RW writers are found in PCs from quite a few manufacturers.