Why do people buy all and expired domains?
I was little bit curious why people buy old and expired domains because according to me, it is better to buy my own domain with keyword domain or short domain with easily remember name. But I was analysing why people use to buy old domain just out of curiosity. And I found some interesting reasons which are thinkable and beneficial but there are still some other baseless reasons to buy old domain.
Well, if the old and the expired domain has high traffic ranking, then you can find out why the website had good traffic from the Google cache. Now you can build another website which is quite similar to the old website of the domain or blog with the same topic of the old website. This is how people try to use the traffic of old domain to their new website. If you want to do marketing (say in selling bags) and you find an expired domain with bag in the keyword and has high traffic rank, then you can use the old traffic of the website in your marketing for bags.
Another reason for buying old and expired domain is the PR of the old domain. I think this is not a genuine reason to buy domain name for the PR because the PR will automatically go or decrease in the next Google PR update. But many people buy PR domain thinking that they can start earning through blogging very easily with PR domain but the concept is completely wrong which bring many dirty things in the blogging. But if the PR is not a fake, then many reports that it works and the PR is maintained even in the Google PR update.