one of my client website shows hidden text in footer. Its not showing anything for spamming or keywor , hide page generated time only . Ex: www.xitclub.com/forum.php (see footer Page generated in 0.80484 seconds with 18 queries) if I someone hide this with background color it will effect on SEO or google can consider it as spam ??
yes this is a bad thing to be doing and some consider it black hat seo so i would not try to sneak extra keywords by hiding them like this
If it looks suspicious in your eyes as a user, then it's not good. Great seo is always about doing what's best for your website's visitors.