Are 10 Web 2.0's Really Enough?

Hey guys I was wondering, for a 3 tier back linking system are 10 web 2.0's for the first tier really good enough to rank a micro niche keyword or even a keyword with medium competition?

Its a difficult question to answer without much information. Sometimes it can be enough, sometimes it wont be enough. What does your first page results look like? How many and what kid of links do they have? How does your second tier look like? how many of the links you built got indexed already ? How many have you built so far ?

The only way you can know is to keep building links on a regular basis. I always suggest my clients not to stop building links even after getting good rankings so don't stop at 10 web 2.0s try to bring in some diversity into your campaign.

It's always good to have diversity anywhere when link building, with consistency

Diversify your backlinks profile. 10 web 2.0's <--500 social bookmarks
Same Web 2.0s <--1000 wikilinks
Drip index over 14 days and make sure all the content used is unique.

I hope you understand this.

Thanks for the info guys, I plan on doing around 500 social bookmarks, 500 wikilinks and a few more web 2.0's for every web 2.0 in my first tier to build my second tier, then doing around 500-1000 social bookmarks and wikilinks and pointing them at the second tier to create my third tier... Have any suggestions for programs to make it a bit easier to build up my second and third tiers? Already have SB

Also what is the difference between a web2.0 and a web2.0 property?