The ikea website wasn't what came up, mumsnet was. I wanted tips from real people, with things like "you might think it's easier to do X, but don't do that, do Y instead".
So you click on the thread that came up in google.
You enjoy the posts, you think "these people write well and have good advice".
You notice something interesting-looking on "most active" in the top corner and click on that.
Someone on that thread mentions another thread so you take a look.
You enjoy reading what these people write, so you click to see some more.
You discover a thread about a TV show that you enjoy but your friends don't, so you don't have anyone in RL to discuss it with. You enjoy reading people's thoughts.
You start exploring the site more and discover a subforum that's about your hobby, but without the competitive machismo that is often found in dominant-male hobby websites.
Perhaps someone on that subforum asks a question about a piece of equipment that you have recently bought, or a location that you have recently visited. You post your first ever response and are thanked. This is nice.
At some point you start to deliberately search mumsnet for advice or opinions on issues where you think mumsnet will help, because the advice is better-written and more thoughtful than on most internet forums.
The next time you have a question about a domestic task (remember you got here from wardrobes after all), you think "I bet mumsnet will be able to help me with that". You start your first ever thread. People reply.
If you would stop doing all of these things just because the name of the website did not describe you, then you are missing out.
This applies equally to non-mums of all kinds.