August 30, 2023

Yahoo sitemaps is out

Yahoo Sitemaps is out. You can point Yahoo to a text file (no XML support yet) containing a list of your site’s urls. You can’t upload the file to them. Yahoo was playing around with this a few months ago, but now it’s public. [via SeoWeblog]

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Feed-mail - Email in RSS feeds

Feed-mail.com is an interesting, if quite unusable concept. It’s email sent via RSS feeds. You subscribe to your Feed-mail feed and you get emails that are sent to that feed. Less spam, more secure. But the sender has to login to his Feed-mail account in order to send a message. And there’s no SMTP service either so you’re locked into Feed-mail’s interface. And one thing that irked me was that my password was inscribed into the feed’s url in plain. Major security risk. And I reckon Feed-mail also has the same security problem as receiving Gmail via Bloglines or any public RSS aggregator — you have to ensure that your feed has privacy settings. Feed-mail is still in beta so things might improve on usability.

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Rumor: Microsoft, AIM and Yahoo to cut out all multi-IM clients

Over at drunkenblog.com, there is a post that posits the days of Trillian and other multi-IM clients will be over soon. There’s a rumour that Google is planning a multi-IM client so Microsoft, AOL and Yahoo have ganged up to introduce new non-backward compatible IM clients for each of their services that shuts out all others. This will probably appear for Windows only and will allow Mac multi-IM clients to still function.

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40-60% of Blogspot content is spam

I knew it was bad, but this is an indication of just how bad. Philipp Lenssen did a random survey using Blogspot’s random blog url generator and he catalogued 50 blogs hosted on blogspot. 30 of them were spam blogs. If you are a student fishing for ideas on a paper, I think this is really worth an academic paper with a larger sample.

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Preventing inline images from comment posters

Chris Josephes writes in Oreillynet about an interesting method for finding out if an image that one of your visitors is hotlinking is instead sending a substituted image. Hotlinking is often a danger in forums and blog comments where there is no preset control over what is posted.

Chris says:

If any site user makes a posting that inlines images from a third party server, the editing software should retrieve the image twice using the HTTP HEAD method. For the first retrieval, don’t pass a Referer header. For the second retrieval, set a Referer header that would reference the full URL of the page that would eventually load the image. For both requests, the HTTP server headers Content-Length and ETag should return identical values. If they don’t, that means the web server is sending out different files. Make sure the comment poster is aware of this, and give them the opportunity to correct the problem.

This would be really nice if someone used this method in a plugin for blog CMSes.

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