I have the same problem with a wallet I'm using to receive bounties, as you can see on the links posted by Ninja is not the best thing for privacy doing that, my advice is not to use your main wallet,
Well, if you don't care to get linked between all of your recieving/outgoing transactions, then there is nothing which stops you from using an address multiple times.
Especially if you are going to use this address for only 1 form of income (e.g. signature campaign: You aren't really losing privacy by recieving several sig payouts to the same address,
compared to a new address every week.)
Additionally, you can still use your 'main' wallet. You just have to generate a new address each time or make sure you are not using these coins when sending somewhere else (e.g. coin control in electrum).
I would be kind of curiuos what is the situation with the main altcoins out there (LTC, ETH, DeepOnion, Monero, etc.) they all have the same problem ?
What problem are you talking about? The loss of privacy when reusing addresses?
Well.. LTC is basically the same as BTC. ETH has the same problem because its the same
technology.
I'm not sure how DeepOnion works. I guess its a fork of Doge/LTC with routing through TOR? In this case the same problem would apply.
Monero is the only one which is different in this regards.
In Monero you have an address which you can combine with an PaymentID to get a kind of 'hidden' payment address.
Combined with ring-signatures you definetly don't have any privacy issues with monero. So this exact 'problem' does not apply to monero.