Welcome to the Q&A Forum

Quite curious with this as I see no definite answer to this.

Let's say that I build a site for a client and place a footer that says  "built by me"...

Will that footer link impact my rankings?

But just to be safe possibly a rel="nofollow" would be an option. Would like to hear your opinion on this.

Thanks!

I'm very interested on what users here use and why?

From my experience regarding online SEO, both CMSs are equal.

However, the ease of use is a different story. While both systems have a learning curve, wordpress is the easiest to learn thus making it probably the most popular CMS today.

Joomla on the other hand takes a bit more time to understand but when learned, can be quite flexible.

So if anyone here is kind enough to add their thoughts, I'm all ears!