It’s good to give users a kick way of login into your website. Make your login input box or link visible, usually users look for it on the top right corner of the website. Like, for example, Photobucket.

On the other side, a bad design example could be Safari Books Online, an online book database. It’s so annoying to me that they don’t have a login box in the homepage! Instead they have a “Subscribe” link. Tricky, eh?

Today I had to look for the registration email to get the link they sent me to search books. Safari was obviously not thinking in the user but in the potential customer when they designed their homepage. Already registered users have to remember to go to the subdomain search.safaribooksonline.com in order to actually use the service they are paying for.