WordPress MU

Greetings,

We just launched our first WPMU site. I'm using the Mandigo theme and the WPMU Dev Premium Supporter plugin (among others). I'm hoping for some feedback on the following ...

1. In addition to disabling ads and increasing the space quota on Supporter sites, I intend to enable plugins for Supporters, giving them additional features and functionality. Is this a good idea? Any suggested plugins? (I've installed Grunion Contact Form and Unfiltered MU and am looking for a good WPMU-compatible chat and/or polls plugin.)
2. I'm having a terrible time trying to figure out why our wp-signup page looks great in some browsers (IE & Safari) but gets chewed up in Firefox. Any direction here is greatly appreciated.

Here's the site ... http://rvblogz.com

Thank you all in advance for your time!

edit: A strong recommendation. Do *NOT* send your users to the wp.org forums for help. That's like sending a Waldenbooks customer to Safeway Supermarkets for help. They will not help folks as soon as they find out it's on a mu install.

I just erased all of your ToS from the sign up page. :)

(You may want to search the premium forums as that issue's been discussed a couple of times.)

You may want to consider removing the adverts from your home page: http://wpmututorials.com/ideas/whats-on-your-front-page/ You're driving away your visitors with those adverts.

Where's your help files?

On your sign up page, you have that you'll send me my password but yet you want it. Huh?

What's a supporter? Those links require a sign in to view. There's no information about it visible to visitors.

Thanks. Addressing those issues now.

Does anyone have input regarding plugins as perks for supporters? Could this allow them to add damaging plugins via the wp browser/installer? Ones that add db tables for instance.

Also, still seeking advice on how I might troubleshoot or fix the signup form display issue I'm having with Mandigo in Firefox?

"Could this allow them to add damaging plugins via the wp browser/installer? "

The installer is only visible to site admins.

And I looked at the signup page and I'm not seeing anything funky. Kinda crowded though.

Thank you Andrea! Your feedback is appreciated. Mind if I ask ... what browser were you using? We're seeing layout problems in firefox, and figure out the fix.

FF3 on Linux, which is usually bound to screwing up. :D

have you tried http://browsershots.org ?