My cronjobs are picking up profiles with broken avatars. Mostly these appear to be 403s from Amazon S3. (guessing ACL problem) - Also some profile pic URLs don't appear to have file extension.
Here's a list of user IDs affected 16043513 16750098 31585899 42854554 112564807 21895964 40581702 20228830 76548787 7754142 2365621 191095589 116205286 194025160 85801804 100892581 121435564 40957199 138852644 15112697 100507581 15137209 150515107 34507533 194208312 183513992 196037820 185650485 190402611 20758496 57700410 93878012 185187887 150781581 101030129 112813599 120923232 20240291 179635513 129470065 110558062 50013082 182768288 54011263 123070813 186379034 189829951 15073615 15139701 64369909 190161770 151090448 163978408 39029651 23770408 17073028 101663482 41266471 26522074 18327181 169540092 173109002 19588191 123332914 14583298 127887497 21807338 174213835 128829875 178235982 59447408 15139632 112043276 15139358 29285835 10812932 128153098 103239661 137938401 165341175 93499379 142264591 65870543 125061952 85181985 140008847 112780190 131795738 120391955 174539966 101514239 129964162 97146535 122779494 120670217 123531432 150956370 172256595 166610032 174349689 157614647 145599105 156211148 180132185 174544230 118345431 101715840 168934188 102699979 161394206 152234349 185058228 18643276 125985442 100798835 175650187 109440999 182084615 102331487 182710926 99398638 139014613 116595283 171108486 145682502 123151003 137899129 128208747 145962776 145467001 166421666 122848756 166136679 100348568 94204076 119599518 172522970 21721609 133239258 132677048 19212129 152263249 38331665 147316393 161278271 122415870 167451222 77212419 142205925 17532187 70596046 134363969 181652928 123355584 158196193 149049797 99497731 108885760 150277054 17020800 102614484 109490817 166414116 177164435 76052140 58123971 162694988 155212455 109836626 129644722 97837669 138024486 113686401 165330545 183247611 160171267 108944130 109564360 168115825 151662031 151425020 121467109 9416242 142311195 186387668 57287018 205365122 186811184 181968664 100207706 175658337 168408211 101276261 159007861 78243786 105304570 156829819 130359175 143736549 124304349 99420072 188117602 92299633 155006719 115994515 151704431 175653189 105422394 92577027 151662851 23461101 137188240 29228304 -- Twitter developer documentation and resources: http://dev.twitter.com/doc API updates via Twitter: http://twitter.com/twitterapi Issues/Enhancements Tracker: http://code.google.com/p/twitter-api/issues/list Change your membership to this group: http://groups.google.com/group/twitter-development-talk