If I want to make a website of a long bike tour, should I make my own website or pay some one to do it for me?

Allow me to recommend traveljournal.net. It is developed by me, while traveling the world and optimised for use on the road.

It has all the usual features: blog, photo albums, map (you can upload GPS-logs), secure document vault, etc. One of the things that really sets it apart from other options? no advertisements whatsoever and designed to work wherever you are, even when the internet connection is slower than sending a postcard.

It is continuously updated/developed by someone who actually travels around and uses the service himself. I eat my own dogfood, so to say : )

Update
The answer from unor talks about ownership of the content. With TravelJournal.net, the writers are and will always be the owner of all content they publish (provided they do not republish copyrighted materials offcourse).

Also, because many traveller manage their journals over insecure, often publicly shared networks (wifi, etc) every journal comes standard with SSL/TLS security build in. So, whenever you login or otherwise perform any sensitive action, your connection is secured with the same level of encrypted as web shops use (or at least, they should) to secure payment transactions.

I would go for an "email approach". Different blog platforms seem to support this feature, where you can provide the content for your blog by email. I am an avid user of Posterous. , but I was told that wordpress plugins exist that do the same.

The workflow is easy, you post a blog by posting it to post@posterous.com. Photo's, films and the like are added as attachment to the mail. You register by sending an initial mail. On the first email, your emailaddress is registered and you will get a respons explaining the following email.

Personally I dislike custom made blog platforms, for the simple reason that they often requires instant and good internet access, an asset not alway available while traveling. With an email approach you can blog while being offline, by just writing an email in an offline email client such as Outlook, mail, eudora, thunderbird, etc. The moment you have access, posting your content is just as simple as pressing "submit" or "send".

Especially in the case you need to buy internet time on an hourly base (internet cafe, paid wifi), you don't want to lose that time on writing blog content.

Weather or not it is worthwhile, definitely! You are right that there are many blogs around, but there is no such thing as "the" traveler, so the more blogs the merrier. I am saying this because I am getting a lot if not most inspiration and information form personal blogs.

Jekyll, or similar.

This generates the website on your computer, which means you can write and edit everything offline, like in your tent anywhere, and then upload it when a connection is available. It also means you can write with a proper text editor, not some textbox in a webpage.

There's a third-party solution out there that's specific to bike touring journals: Crazy Guy on a Bike is a solution for touring cyclists to post journals.

It's also a community of touring cyclists. There are forums and classified ads, and, most importantly, thousands of journals already hosted. You can host photos there, and embed videos and maps.