I just saw the massive link dump from a new user and flags from several users. In addition to my answer below, which is my general opinion on this issue, I think community members can also use some good judgement before flagging stuff.
Everyone who flagged also had the privilege to comment... The user is obviously new — they could've left them a comment telling them that they should disclose their affiliation/paraphrase the information. I'm not saying you shouldn't flag — you should, and the flags were all good and to the point — but I found it surprising that people left a detailed note in the flag message, when the same would've also been useful as a comment.
Apparently, this user has been around before (1 and 2) and posted similar link-only answers, which were also upvoted. Perhaps pointing it out the first time would've helped... I'm hesitant to delete those answers since a few people found it useful (at least for the first one), so it might be worth salvaging. But if you feel it adds nothing more to the discussion, mention so in the comments here or flag it.
Linking to something and not summarizing it is never good. If the external link dies, we're left guessing as to what it might have contained, and the frustration only increases when you see lots of votes and comments suggesting that it was useful. I talk about some aspects of this in this question:
Response #7 references an earlier answer (could also be an external link), but provides a crucial summary so as to make the answer self sufficient. This is important for two reasons: having the summary helps in the case of link rot (i.e., external links are dead because their site shut down) and to not have to make people click through a whole bunch of links just to get to the answer. They can proceed if they like what they see. Remember, in all these cases, you should cite the source(s) that you quoted (it is a good practice to make it explicit that you're quoting yourself).
Always quote (if the license allows) or paraphrase the information, regardless of whether you are linking to your own site or someone else's. If it's your own, the standard disclosure policy applies, as you have noted. We have allow users to link to their blogs/sites as long as all these conditions are met.
