I have been building a small network of mostly free sites. Getting each of them ranked can be tricky but I have come across discussions in here about not linking these sites like link wheels but just have them separately point to your money site.
I have heard that also most people favour WP blogs as their web 2.0 of choice and dont bother with other platforms.
My question to knowledgeable people who have built similar networks are whether they bother with diversifying the URL (ie wordpress, blogger, blog, squidoo etc) and if not why not.
I thought that if your whole network comes off one URL http://XXXXXXX dot wordpress dot com/ that not only is that risky in case they charge or close down, but that google would see this as too obvious and penalise any link power generated.
Do you use WP because of the good tools or plugins etc? Shouldn't at least every second web 2.0 property be something different than WP?
Do people look for web 2.0 properties that work of the WP platform (the CMS) or do you randomize the properties you have, to cloak your network?