Glossary entry (derived from question below)
Portuguese term or phrase:
O site que visitei é fraquinho
English translation:
The site I visited is lame
Portuguese term
O site que visitei é fraquinho
another example:
O novo disco do George Michael é bem fraco.
May 30, 2008 20:43: jack_speak Created KOG entry
Proposed translations
Competent, diligent, thorough, complete.
Native in: English 
Works in: English to Portuguese, Portuguese to English
The site I visited is lame
Ex.:
"Madonna's new CD is pretty lame as well. That's why I dl all my music on livejournal. They have lots of mp3 sharing communities. ..."
http://talk.livedaily.com/archive/index.php/t-515162.html
http://www.google.com/search?hl=en&q="website is lame"
poor
Brazil
Love What I do and Do it Very Well
Native in: Portuguese
Works in: Portuguese to English, English to Portuguese, Spanish to Portuguese, and 1 more.
The site I visited is thin
Do Cambridge:
thin (WEAK)
adjective thinner, thinnest
weak or of poor quality:
a thin excuse
a thin disguise
a thin smile
Portugal
The best value for your money
Native in: Portuguese
Works in: French to Portuguese, English to Portuguese
The site I visited is really mediocre
Your site was the most mediocre site on the web.
puny
Adjective
1. Inferior in strength or significance; "a puny physique"; "puny excuses".
2. (used especially of persons) of inferior size.
Armenia
Precision and clarity
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Portuguese to English, German to Portuguese, and 1 more.
the site I visited is rather wimpy
The site I visited is useless.
--------------------------------------------------
Note added at 58 mins (2008-05-29 15:57:33 GMT)
--------------------------------------------------
or worthless
web site is nothing to write house/mom about
Brazil
25 years working with Language
Native in: Swedish (Variants: Rikssvenska, Stockholm)
Works in: Portuguese to Swedish, English to Swedish
The site I visited is nothing to write home about
United States
PhD in Translation Studies
Native in: English (Variant: US)
Works in: Spanish to English, English to Spanish
The site I visited is really weak
Another (very youth-oriented) option might be "bogus" (at least in the US).
Something went wrong...