You might probably have several topics you like to blog.

Instead of having more domain names for several topics that you like, it’s cheaper as well as more beneficiary to make sub-domains from one main domain name. you can have as many new domain names you want from that one domain name.
Pick several of blogging topics you like and find the correct and shortest keyword for that typical topic and start a sub-domain using that keyword, the shortest the better.

Example :
main domain : http://www.intinfos.com
Topic : Make Money from Your Blog
Sub-domain : http://wisdom.intinfos.com
Sub-domain : http://ebooks.intinfos.com

Why sub-domain?
Sub domain is one of the many ways you can improve your site’s popularity and links.

SEO companies are also on this sub-domain sites, and GOOGLE loves this. Have you ever noticed how many sub-domain name GOOGLE has?

tools.google.com
search.google.com
blogsearch.google.com
pack.google.com
images.google.com
and many more …

Now, start making sub-domains instead of buying more domain names you can’t even find it easy to manage.

No doubt that one major role to play in increasing your link popularity and pagerank is through Reciprocal Linking to web directories. The biggest problem faced by new webmasters is that their request for reciprocal link exchange is often turned down by webmasters with high page rank websites because the new site often is PR 0. This is the fact, it is hard at the beginning.

But some Directories are totally FREE, one of those is the EYEONHYIP.COM Free Reciprocal Web Directory which is not taking any penny to do the service.

I suggest you do try to visit it and submit your site link, you just need to add their code to your site and you are done.

Visit EYEONHYIP.COM Free Reciprocal Web Directory