Hidden H1 Tags

HiI wanted to add in hidden form in my website. Please suggest how much its going to affect my site. Will it be helpful for me

Your title says H1 tag and in ur thread u talk about forms. Make up ur mind.

Be careful putting hidden content on your site.... google is wise to that sort of thing.

Wonderful, I love how BHW's moderation system prevents me from answering this question because of its terrible filtering.

I'm assuming you mean replacing your title with a header image? Don't ever stuff your site with invisible H1s for ranking purposes. That may have worked back when Geocities was popular, but Google is much smarter than that. A lot of people use image replacement so that they can have a banner instead of displaying their blog titles in text, though.

Try the image replacement technique in the HTML5 Boilerplate. It works the best performance-wise, but it will leave a faint outline on IE6.

If you want to support IE6, text indent by over 9000 and set your overflow to hidden. Then set a background image for the container div.